RS422/RS485 /EIA StandardUSB2.0; compatible USB 1.1 rate: 300bps to 921KbpsIndication LED's for Power, TX and No IRQs, DMA or required; No ConflictsAutomatic send data control. Auto detection of data speed; Zero delay automatic missionAutomatic hand-shaking protocol supportedBuilt-in static and surge protection up to 600W; 15KV ESD protection (Electro-Static discharge)Supports multiple terminals up to 32 -485 or -422 devices mission distance: up to 1200 for -485/422 endWorking modes: asynchronous; point-to-point or point-to-multipoint; 2-line half duplex and 4-line full duplex.Application fields: automation system, Distributed control system, Other 485/422 serial device wireless network, LED display equipments, PLC control and management, SCADA, measuring instruments and monitoring system, management, Treatment/medication automation, automation, Check on work attendance/ Human management.Colour: silver + blackMaterial: plastic + metalSize: length 1.2 Package Contents:1 * USB to 485/422 conversion line1 * CD drive1 * 9-pin RS232 female to 5-position terminal1 * manualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.